you have scored pretty good marks but regarding admission to the IITs, you can apply to the top IITs likes of Mumbai Delhi Kanpur Kharagpur well the chance of admission depends upon the concerned IIT. but most probably you will find seats in anyone of the above mentioned college that's what i am sure of.

regarding recruitment in PSUs, the chances are pretty slim since students from the general category do require to finish under 200 rank but still for further assistance you can check our college and psu rank possibility 

https://engineering.careers360.com/gate-college-predictor

 all the best